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Effects of Selection for High Litter-Weight on Reproductive Performance in Mice.

The reproductive performances of two lines of mice selected for high litter-weight at nine weeks of age and a control line were compared based on data obtained after 15 generations of breeding. Twenty pairs of parents were bred per generation in the control line and ten pairs in each of the selected...

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Main Authors: Baharin, K., Beilharz, R. G.
Format: Article
Language:English
English
Published: 1978
Online Access:http://psasir.upm.edu.my/id/eprint/1998/1/Effects_of_Selection_for_High_Litter-Weight_on_Reproductive.pdf
http://psasir.upm.edu.my/id/eprint/1998/
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id my.upm.eprints.1998
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spelling my.upm.eprints.19982013-05-27T06:58:09Z http://psasir.upm.edu.my/id/eprint/1998/ Effects of Selection for High Litter-Weight on Reproductive Performance in Mice. Baharin, K. Beilharz, R. G. The reproductive performances of two lines of mice selected for high litter-weight at nine weeks of age and a control line were compared based on data obtained after 15 generations of breeding. Twenty pairs of parents were bred per generation in the control line and ten pairs in each of the selected lines: at each generation the parents were mated only once. Calculation of inbreeding coefficients from pedigrees indicated a rapid rise in inbreeding coefficient in the selected lines. There was little response to selection for high litter-weight and in fact there was a general decline in reproductive performance associated with high levels of inbreeding in the selected lines although the relationship was not linear. Some initial response tn body weight gain was observed but even this trait showed a decline in later generations when inbreeding coefficient exceeded 40%. 1978 Article NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/1998/1/Effects_of_Selection_for_High_Litter-Weight_on_Reproductive.pdf Baharin, K. and Beilharz, R. G. (1978) Effects of Selection for High Litter-Weight on Reproductive Performance in Mice. Pertanika, 1 (2). pp. 97-104. English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The reproductive performances of two lines of mice selected for high litter-weight at nine weeks of age and a control line were compared based on data obtained after 15 generations of breeding. Twenty pairs of parents were bred per generation in the control line and ten pairs in each of the selected lines: at each generation the parents were mated only once. Calculation of inbreeding coefficients from pedigrees indicated a rapid rise in inbreeding coefficient in the selected lines. There was little response to selection for high litter-weight and in fact there was a general decline in reproductive performance associated with high levels of inbreeding in the selected lines although the relationship was not linear. Some initial response tn body weight gain was observed but even this trait showed a decline in later generations when inbreeding coefficient exceeded 40%.
format Article
author Baharin, K.
Beilharz, R. G.
spellingShingle Baharin, K.
Beilharz, R. G.
Effects of Selection for High Litter-Weight on Reproductive Performance in Mice.
author_facet Baharin, K.
Beilharz, R. G.
author_sort Baharin, K.
title Effects of Selection for High Litter-Weight on Reproductive Performance in Mice.
title_short Effects of Selection for High Litter-Weight on Reproductive Performance in Mice.
title_full Effects of Selection for High Litter-Weight on Reproductive Performance in Mice.
title_fullStr Effects of Selection for High Litter-Weight on Reproductive Performance in Mice.
title_full_unstemmed Effects of Selection for High Litter-Weight on Reproductive Performance in Mice.
title_sort effects of selection for high litter-weight on reproductive performance in mice.
publishDate 1978
url http://psasir.upm.edu.my/id/eprint/1998/1/Effects_of_Selection_for_High_Litter-Weight_on_Reproductive.pdf
http://psasir.upm.edu.my/id/eprint/1998/
_version_ 1643822187853905920
score 13.211869

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